<template>
  <view class="goods-detail-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item, i) in goodsDetail.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box" v-if="Object.keys(goodsDetail).length > 0">
      <!-- 商品价格 -->
      <view class="price">￥{{goodsDetail.goods_price}}</view>
      <!-- 信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">{{goodsDetail.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费{{total}}</view>
    </view>

    <!-- 商品详细介绍 -->
    <rich-text :nodes="goodsDetail.goods_introduce"></rich-text>

    <!-- 商品导航 -->
    <view class="nav-container">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  
  import { mapState, mapMutations, mapGetters } from 'vuex'
  
  
  
  export default {
    data() {
      return {
        // 定义数据容器
        goodsDetail: {}, // 产品详情
        // 商品导航数据
        options: [{
            icon: 'shop',
            text: '店铺',
            // info: 2,
            infoBackgroundColor:'#007aff',
            infoColor:"red"
        }, {
            icon: 'cart',
            text: '购物车',
            // infoBackgroundColor:'#007aff',
            info: 0
        }],
        buttonGroup: [{
          text: '加入购物车',
          backgroundColor: '#ff0000',
          color: '#fff'
        },
        {
          text: '立即购买',
          backgroundColor: '#ffa200',
          color: '#fff'
        }]
        
      };
    },
    
    watch: {
      // total(newTotal){
      //   this.options[1].info = newTotal
      // }
      
      total: {
        handler(newTotal){
          this.options[1].info = newTotal
        },
        immediate: true
      }
      
    },
    
    computed: {
      ...mapState('m_cart', ['cart']),
      ...mapGetters('m_cart', ['total'])
    },
    
    onLoad(options) {
      
      // this.options[1].info = this.total
      // 发起请求
      this.getGoodsDetail(options.goods_id)
    },
    methods: {
      ...mapMutations('m_cart', ['addCart']),
      // 获取产品详情
      async getGoodsDetail(goods_id){
        const {data: res} = await uni.$http.get('/goods/detail', {goods_id:goods_id})
        console.log(res)
        // 异常数据判断
        if(res.meta.status !== 200) return uni.$showMsg()
        // 设置页面数据
        // 数据格式清理
        res.message.goods_introduce = res.message.goods_introduce
                                                 .replace(/<img /g,'<img style="vertical-align: middle;"')
                                                 .replace(/.webp/g, '.jpg')
        this.goodsDetail = res.message
      },
      // 点击轮播图图片跳转到图片预览
      preview(i){
        uni.previewImage({
          urls: this.goodsDetail.pics.map(item => item.pics_big_url),
          current: i
        })
      },
      // 商品导航事件处理函数
      onClick(e){
        console.log('click', e)
        if(e.content.text === '购物车'){
          // 跳转到购物车页面
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        console.log('button', e)
        if(e.content.text ==='加入购物车'){
          // 拼装购物车商品对象
          const goods = {
            goods_id: this.goodsDetail.goods_id,
            goods_small_logo: this.goodsDetail.goods_small_logo,
            goods_name: this.goodsDetail.goods_name,
            goods_price: this.goodsDetail.goods_price,
            goods_state: true,
            goods_count: 1
          }
          this.addCart(goods)
        }
      }
      
    }
  }
</script>

<style lang="scss">
  
  .goods-detail-container {
    padding-bottom: 50px;
  
  
  swiper {
    height: 750rpx;
    image {
      width: 100%;
      height: 100%;
    }
  }
  
  // 商品信息区域的样式
  .goods-info-box {
    padding: 10px;
    padding-right: 0;
    .price {
      color: #c00000;
      font-size: 18px;
      margin: 10px 0;
    }
    .goods-info-body {
      display: flex;
      justify-content: space-between;
      .goods-name {
        font-size: 13px;
        padding-right: 10px;
      }
      // 收藏区域
      .favi {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border-left: 1px solid #efefef;
        color: gray;
      }
    }
    // 运费
    .yf {
      margin: 10px 0;
      font-size: 12px;
      color: gray;
    }
  }
  
  .nav-container {
    position: fixed;
    bottom: 0;
    // left: 0;
    width: 100%;
  }
  
  }
</style>
